Hi folks! Together with @mworrell for @zotonic_core_team we are made new Erlang/OTP library logstasher 
This library is provide easy way to format and send logs from Logger to Logstash by TCP and UDP. Or you can send output logs directly into console if you want 
.
For add this library into your rebar3 project, just update your rebar.config:
{deps, [
{logstasher, "~> 1.0.0"}
]}.
Configure logstasher and Logger with using new handler in sys.config like:
[
{kernel, [
{logger, [
{handler, logstash, logstasher_h,
#{
level => info
}
}
]}
]},
{logstasher, [
{transport, udp}, % tcp | udp | console
{host, "localhost"}, % inet:hostname()
{port, 5000} % inet:port_number()
]}
].
Also don’t forget add the logstasher application to your .app.src file:
{applications, [
....
logstasher,
....
]},
The Logstash configuration can looks like:
input {
udp {
codec => json
port => 5000
queue_size => 10000
workers => 10
type => default_log_type
}
}
output {
stdout {}
elasticsearch {
protocol => http
}
}
And of course this library is available on hex.pm 
Enjoy and let us know what you think about this library and what we can improve for you!
